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One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

The diagonals of a quadrilaretral intersect at (-1,4). one of the sides of the quadrilateral is bounded by (2,7) and (-3,5) determine the coordinates of the other side in order for the quadrilaretral to be a square.

1. find the area of the unshaded square 2. find the area of the large square 3. what is the area of the frame represented by the shaded region show